Synthesis of zinc aluminate with high surface area by microwave hydrothermal method applied in the transesterification of soybean oil (biodiesel)
Source abstract
Abstract
Abstract Zinc aluminate is a material with high thermal stability and high mechanical strength that, owing to these properties, is used as a catalyst or support. In this work, zinc aluminate spinel was synthesized by the microwave hydrothermal method in only 15 or 30 min at a low temperature (150 °C) without templates, using only Al(NO3)3·9H2O, Zn(NO3)2·6H2O, and urea as precursors and applied in the transesterification of soybean oil. X-ray diffraction analysis showed that ZnAl2O4 had a cubic structure without secondary phases. The nitrogen adsorption measurements (BET) revealed a high surface area (266.57 m2 g−1) for the nanopowder synthesized in 15 min. This powder showed activity of 52.22% for the catalytic conversion of soybean oil into biodiesel by transesterification.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalysis and Hydrodesulfurization Studies · Catalytic Processes in Materials Science · Biodiesel Production and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Hydrothermal synthesis of nanoporous zinc aluminate with high surface area10.1016/S0025-5408(00)00185-9 ↗
2. Spinel-type zinc aluminate (ZnAl2O4) nanoparticles prepared by the co-precipitation method: a novel green and recyclable heterogeneous catalyst for the acetylation of amines, alcohols and phenols under solvent-free conditions10.1016/j.apcata.2010.05.005 ↗
3. Rhodium complexes supported on zinc aluminate spinel as catalysts for hydroformylation and hydrogenation: preparation and activity10.1016/S1381-1169(02)00073-0 ↗
4. Solvothermal synthesis and characterization of nanosized zinc aluminate spinel used in iso-butane combustion10.1016/j.jallcom.2009.11.151 ↗
5. Structural, elastic, thermophysical and dielectric properties10.1016/j.jeurceramsoc.2003.06.001 ↗
6. In vitro studies of osteoblasts response onto zinc aluminate ceramic films10.1590/S1516-14392009000400022 ↗
7. Synthesis, properties and optimization of the rheological behaviors on alumina and zinc aluminate powders obtained from dicarboxylate precursos10.1016/j.powtec.2010.03.027 ↗
8. Hydrogen interactions and catalytic properties of platinum-ti supported on zinc aluminate10.1016/0926-860X(95)00269-3 ↗
9. Ultrafine gahnite (ZnAl2O4) nanocrystals: hydrothermal synthesis and photoluminescent properties10.1016/j.mseb.2008.09.023 ↗
10. Facile solution synthesis and characterization of porous cubic-shaped superstructure of ZnAl2O410.1016/j.matlet.2010.09.085 ↗
11. Structure and growth mechanism of CuO plates obtained by microwaves-hydrothermal without surfactants10.1016/j.apt.2009.11.007 ↗
12. CuO urchin-nanostructures synthesized from a domestic hydrothermal microwave method10.1016/j.materresbull.2007.03.019 ↗
13. Microwave processing: fundamental and application10.1016/S1359-835X(99)00020-2 ↗
14. Microwave-hydrothermal synthesis of the multiferroic BiFeO310.1016/j.materresbull.2009.03.015 ↗
15. ZnO architectures synthesized by a microwave-assisted hydrothermal method and their photoluminescence properties10.1016/j.ssi.2010.03.013 ↗
16. ZnFe2O4 nanoparticles: Microwave-hydrothermal ionic liquid synthesis and photocatalytic property over phenol10.1016/j.jhazmat.2009.06.019 ↗
17. Preparation of CeO2 by simple microwave-hydrothermal method10.1016/j.ssi.2008.11.016 ↗
18. Preparação do suporte ZnAl2O4 via reação de comustão e sua caracterização
19. Zinc-aluminates for an in situ sulfur reduction in cracked gasoline10.1016/j.apcatb.2007.12.001 ↗
20. Synthesis of nanosized and microporous zinc aluminate spinel by microwave assisted hydrothermal method (microwave-hydrothermal synthesis of ZnAl2O4)10.1016/j.solidstatesciences.2005.08.006 ↗
21. Pd and ZnAl2O4 nanoparticles prepared by microwave-solvothermal method as catalyst precursos10.1016/j.jallcom.2006.08.077 ↗
22. Stability, activity and selectivity study of a zinc aluminate heterogeneous catalyst for the transesterification of vegetable oil in batch reactor10.1016/j.apcata.2009.11.028 ↗
23. New heterogeneous process for biodiesel production: a way to improve the quality and the value of the crude glycerin produced by biodiesel plants10.1016/j.cattod.2005.07.181 ↗
24. Synthesis of mono-dispersed ZnAl2O4 powders under hydrothermal conditions10.1016/S0167-577X(02)00561-X ↗
25. Influência do agente precipitante na preparação do óxido de nióbio (V) hidratado pelo método da precipitação em solução homogênea10.1590/S0100-40422005000200016 ↗
26. Metal-suport effects of platinum supported on zinc aluminate10.1016/S0042-207X(01)00204-4 ↗
27. Modification of TiO2 for enhanced surface properties: finite ostwald ripening by a microwave hydrothermal process10.1021/la052716j ↗
28. Flory · 1953
29. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity10.1351/pac198557040603 ↗
30. Figueiredo · 1987